PY3-948 is now a deserted planet. SG-1 had discovered a building that contained a secret chamber of ancient Goa'uld design which served as a meeting place for the Linvris, a league of nine lesser Goa'uld. Their decaying bodies were found in the sealed chamber, killed by Ma'chello's inventions a month before. The Goa'uld killing devices were unwittingly brought back to the SGC within the tablet and page turning device found in the chamber.
Cross Reference: Linvris, Ma'chello's Inventions
Episode Reference: Legacy